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// Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QT3DRENDER_RENDER_SHADERCACHE_H
#define QT3DRENDER_RENDER_SHADERCACHE_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <Qt3DRender/private/qt3drender_global_p.h>
#include <Qt3DRender/private/shader_p.h>
#include <QtCore/qhash.h>
#include <QtCore/qlist.h>
#include <QtCore/qmutex.h>
QT_BEGIN_NAMESPACE
class QOpenGLShaderProgram;
namespace Qt3DRender {
namespace Render {
#if defined(QT_BUILD_INTERNAL)
class tst_ShaderCache;
#endif
class Q_3DRENDERSHARED_PRIVATE_EXPORT ShaderCache
{
public:
~ShaderCache();
QOpenGLShaderProgram *getShaderProgramAndAddRef(ProgramDNA dna, Qt3DCore::QNodeId shaderPeerId, bool *wasPresent = nullptr);
void insert(ProgramDNA dna, Qt3DCore::QNodeId shaderPeerId, QOpenGLShaderProgram *program);
void removeRef(ProgramDNA dna, Qt3DCore::QNodeId shaderPeerId);
void purge();
void clear();
// Only ever used from the OpenGL submission thread
QOpenGLShaderProgram *getShaderProgramForDNA(ProgramDNA dna) const;
QList<Qt3DCore::QNodeId> shaderIdsForProgram(ProgramDNA dna) const;
private:
// Only ever used from the OpenGL submission thread
QHash<ProgramDNA, QOpenGLShaderProgram *> m_programHash;
// Accessed from both the OpenGL submission thread and the aspect thread
QHash<ProgramDNA, QList<Qt3DCore::QNodeId>> m_programRefs;
QList<ProgramDNA> m_pendingRemoval;
QMutex m_refsMutex;
#if defined(QT_BUILD_INTERNAL)
friend class tst_ShaderCache;
#endif
};
} // namespace Render
} // namespace Qt3DRender
QT_END_NAMESPACE
#endif // QT3DRENDER_RENDER_SHADERCACHE_H
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